CN109961861A - Reactivity measurement instrument under a kind of nuclear power plant reactor depth subcritical state - Google Patents
Reactivity measurement instrument under a kind of nuclear power plant reactor depth subcritical state Download PDFInfo
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- CN109961861A CN109961861A CN201711337094.1A CN201711337094A CN109961861A CN 109961861 A CN109961861 A CN 109961861A CN 201711337094 A CN201711337094 A CN 201711337094A CN 109961861 A CN109961861 A CN 109961861A
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- nuclear power
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
- G21C17/104—Measuring reactivity
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention belongs to nuclear power station reactivity measurement technical fields, and in particular to reactivity measurement instrument under a kind of nuclear power plant reactor depth subcritical state.Instrument of the invention includes broadband low noise pre-amplifier, DC high-voltage power supply, high-speed digitization acquisition module, low-tension supply and data processing equipment.Broadband low noise pre-amplifier receives source range detector signal and is amplified, high-speed digitization acquisition module receives broadband low noise pre-amplifier output signal, signal data after high-speed digitization is transmitted to data processing equipment, DC high-voltage power supply provides high pressure for source range detector, low-tension supply is broadband low noise pre-amplifier, high-speed digitization acquisition module and DC high-voltage power supply power supply, and data processing equipment calculates nuclear power plant reactor reactivity.The present invention can be realized the accurate measurement of the reactivity during nuclear power plant reactor shutdown, suitable for during nuclear power plant reactor shutdown reactivity monitoring and correlation test.
Description
Technical field
The invention belongs to nuclear power station reactivity measurement technical fields, and in particular to a kind of nuclear power plant reactor depth is subcritical
Reactivity measurement instrument under state.
Background technique
Reactivity is instruction nuclear reactor internal neutron effective multiplication factor Keff to the relative depature amount of critical value, is anti-
The important parameter of reactor operation situation is reflected, accurately measuring the safe operation for reactor and playing its economic benefit for it has
Important meaning.
Traditional reactivity measurement instrument amplifies electricity using power range detector signal as signal source, by low current
Current signal is amplified and acquires on road, calculates reactivity using digital inverse kinematics method.This quasi-instrument is mainly in reactor approach to criticality
Monitoring reactivity, plays a key effect in nuclear power station physical start-up when nearby.
When reactor is in depth subcritical state, the signal of power range detector output is very faint, wherein because in
Signal component that is sub and generating is very low, and digital inverse kinematics method deviation when far from critical is larger, traditional reactivity measurement instrument
It is lower that device measures reactive confidence level.
Summary of the invention
The technical problem to be solved in the invention are as follows: in the prior art when reactor is in depth subcritical state
The reactive confidence level that nuclear power plant reactor measuring instrument measures is lower, it is difficult to meet technical requirements.
It is described that technical scheme is as follows:
Reactivity measurement instrument under a kind of nuclear power plant reactor depth subcritical state, including signal condition part and data
Processing part: the signal condition part includes that broadband low noise pre-amplifier, DC high-voltage power supply, high-speed digitization are adopted
Collect module and low-tension supply；The data processing division is divided into data processing equipment.The broadband low noise pre-amplifier connects
Receipts source range detector signal, and amplified；The high-speed digitization acquisition module receives the amplification of broadband low noise prime
Then signal data after high-speed digitization is transmitted to data processing section by signal high-speed digitization by device output signal；Institute
It states DC high-voltage power supply and provides high pressure required for work for source range detector；The low-tension supply is before broadband low noise
Grade amplifier, high-speed digitization acquisition module and DC high-voltage power supply power supply；The data processing section receives high-speed digitization
Acquisition module output data calculates nuclear power plant reactor reactivity.
As a preferred solution: the source range detector signal as signal source, leads to broadband low noise by long cable
Sound pre-amplifier, broadband low noise pre-amplifier match with long cable.
As a preferred solution: the DC high-voltage power supply is to export adjustable low ripple high voltage power supply.
As a preferred solution: the output of the low-tension supply is low ripple low-tension supply.
As a preferred solution: the data processing equipment is portable computer or industrial control computer.
As a preferred solution: the index of broadband low noise pre-amplifier is as described below: input impedance is 50 Ω；Output
Impedance is 50 Ω；Amplitude output signal is amplified to 200mV；Noise level is noise peak-to-peak value≤20mVpp.
As a preferred solution: the index of high-speed digitization acquisition module is as described below: input impedance is 50 Ω；Input signal
Peak-to-peak value is -200mV~+200mV；Bandwidth is >=350MHz；Sample rate is adjustable, highest sample rate >=1GSa/s；Storage is deep
Degree is 32Mbits；To be optional from triggering and external trigger, trigger parameter is adjustable for triggering.
As a preferred solution: the index of DC high-voltage power supply is as described below: output area is that 0V~+1500V is adjustable；Output
Electric current is >=4mA；Ripple peak-to-peak value is≤10mVpp.
The invention has the benefit that
Reactivity measurement instrument under a kind of nuclear power plant reactor depth subcritical state of the invention, in nuclear power plant reactor
It is source range using source range detector signal as signal source under subcritical (reactor core Keff is less than the 0.95) state of depth
Detector provides operating voltage, while effectively acquisition source range detector signal and calculating and display reactivity, can be realized core
The accurate measurement of reactivity during the reactor shutdown of power station, suitable for the reactivity monitoring and phase during nuclear power plant reactor shutdown
Close test.
Detailed description of the invention
Fig. 1 is reactivity measurement principle of instrument figure under a kind of nuclear power plant reactor depth subcritical state of the invention.
Specific embodiment
With reference to the accompanying drawings and examples to reactive under a kind of nuclear power plant reactor depth subcritical state of the invention
Measuring instrument is described in detail.
Embodiment 1
As shown in Figure 1, reactivity measurement instrument under one of the present embodiment nuclear power plant reactor depth subcritical state,
Including signal condition part and data processing section.The signal condition part includes broadband low noise pre-amplifier, straight
Flow high voltage power supply, high-speed digitization acquisition module and low-tension supply；The data processing division is divided into data processing equipment.
Source range detector signal is faint and bandwidth, and the long electricity by up to a hundred meters is usually required in nuclear power plant environment
Cable draws signal.The broadband low noise pre-amplifier receives the source range detector signal drawn by long cable, wide
Frequency band low noise pre-amplifier on the one hand can the long cable of matched well, on the other hand the source range received can be detected
Device signal is amplified.
The high-speed digitization acquisition module receives broadband low noise pre-amplifier output signal, by signal high speed number
Word, then the signal data after high-speed digitization is transmitted to data processing section and carries out subsequent calculation processing.
The DC high-voltage power supply provides high pressure required for work for source range detector.It is described straight in the present embodiment
Flowing high voltage power supply is to export adjustable low ripple high voltage power supply.
The low-tension supply is broadband low noise pre-amplifier, high-speed digitization acquisition module and DC high-voltage power supply
Power supply.In the present embodiment, 220V AC power source is converted low ripple low-tension supply by the low-tension supply.
The high-speed digitization acquisition module output data that data processing section will receive, passes through modified convergent reaction
Property the prior arts such as calculation method method calculate reactivity, the real-time display in a manner of waveform, number, and be stored as data
File is handled for analysis.In the present embodiment, the data processing section is using portable laptop computers or industry control
The processing equipments such as computer processed are realized.
Embodiment 2
The present embodiment the difference from embodiment 1 is that: the subcritical shape of one of the present embodiment nuclear power plant reactor depth
Reactivity measurement instrument under state, each component part index of correlation are as described below.
The index of broadband low noise pre-amplifier in the present embodiment: input impedance is 50 Ω；Output impedance is 50
Ω；Output signal characteristics are the time response for retaining input signal, and amplitude is amplified to 200mV or so；Noise level is noise peak
Peak value≤20mVpp.
The index of high-speed digitization acquisition module in the present embodiment: input impedance is 50 Ω；Input signal peak-to-peak value be-
200mV~+200mV；Bandwidth is >=350MHz；Sample rate is adjustable, highest sample rate >=1GSa/s；Storage depth is
32Mbits；To be optional from triggering and external trigger, trigger parameter is adjustable for triggering.
The index of DC high-voltage power supply in the present embodiment: output area is that 0V~+1500V is adjustable；Export electric current be >=
4mA；Ripple peak-to-peak value is≤10mVpp.
The index of low-tension supply in the present embodiment: the indexs such as supply voltage, electric current, ripple meet the confession of each power circuit
Electricity requires.
Claims (8)
1. under a kind of nuclear power plant reactor depth subcritical state at reactivity measurement instrument, including signal condition part and data
Manage part, it is characterised in that:
The signal condition part includes broadband low noise pre-amplifier, DC high-voltage power supply, high-speed digitization acquisition mould
Block and low-tension supply；The data processing division is divided into data processing equipment；
The broadband low noise pre-amplifier receives source range detector signal, and is amplified；
The high-speed digitization acquisition module receives broadband low noise pre-amplifier output signal, by signal high-speed figure
Change, the signal data after high-speed digitization is then transmitted to data processing section；
The DC high-voltage power supply provides high pressure required for work for source range detector；
The low-tension supply is that broadband low noise pre-amplifier, high-speed digitization acquisition module and DC high-voltage power supply supply
Electricity；
The data processing section receives high-speed digitization acquisition module output data, calculates nuclear power plant reactor reactivity.
2. reactivity measurement instrument under a kind of nuclear power plant reactor depth subcritical state according to claim 1, special
Sign is: as the source range detector signal of signal source, broadband low noise pre-amplifier is led to by long cable, it is wide
Frequency band low noise pre-amplifier matches with long cable.
3. reactivity measurement instrument under a kind of nuclear power plant reactor depth subcritical state according to claim 1, special
Sign is: the DC high-voltage power supply is to export adjustable low ripple high voltage power supply.
4. reactivity measurement instrument under a kind of nuclear power plant reactor depth subcritical state according to claim 1, special
Sign is: the output of the low-tension supply is low ripple low-tension supply.
5. reactivity measurement instrument under a kind of nuclear power plant reactor depth subcritical state according to claim 1, special
Sign is: the data processing equipment is portable computer or industrial control computer.
6. reactivity measurement instrument under a kind of nuclear power plant reactor depth subcritical state according to claim 1 or 2,
Be characterized in that: the index of broadband low noise pre-amplifier is as described below: input impedance is 50 Ω；Output impedance is 50 Ω；
Amplitude output signal is amplified to 200mV；Noise level is noise peak-to-peak value≤20mVpp.
7. reactivity measurement instrument under a kind of nuclear power plant reactor depth subcritical state according to claim 1, special
Sign is: the index of high-speed digitization acquisition module is as described below: input impedance is 50 Ω；Input signal peak-to-peak value is -200mV
~+200mV；Bandwidth is >=350MHz；Sample rate is adjustable, highest sample rate >=1GSa/s；Storage depth is 32Mbits；Touching
For hair to be optional from triggering and external trigger, trigger parameter is adjustable.
8. reactivity measurement instrument under a kind of nuclear power plant reactor depth subcritical state according to claim 1 or 3,
Be characterized in that: the index of DC high-voltage power supply is as described below: output area is that 0V~+1500V is adjustable；Exporting electric current is >=4mA；
Ripple peak-to-peak value is≤10mVpp.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111554419A (en) * | 2020-05-18 | 2020-08-18 | 中国核动力研究设计院 | Nuclear reactor subcritical degree measuring method based on uncertainty analysis |
| CN112466492A (en) * | 2020-11-26 | 2021-03-09 | 中国核动力研究设计院 | Measuring device for intermediate range of out-of-pile nuclear instrument system and application method thereof |
| CN112687411A (en) * | 2020-12-24 | 2021-04-20 | 中国核动力研究设计院 | Reactivity measurement method based on multi-detector relay signals |
| CN113871040A (en) * | 2021-09-29 | 2021-12-31 | 福州奇正谷科技有限公司 | Reactivity instrument and system with background current correction |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306508A (en) * | 2011-09-07 | 2012-01-04 | 中国核动力研究设计院 | Reactivity instrument for critical monitoring and critical extrapolation of reactor |
-
2017
- 2017-12-14 CN CN201711337094.1A patent/CN109961861A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306508A (en) * | 2011-09-07 | 2012-01-04 | 中国核动力研究设计院 | Reactivity instrument for critical monitoring and critical extrapolation of reactor |
Non-Patent Citations (5)
| Title |
|---|
| 《中国集成电路大全》编委会 编: "《微波集成电路》", 31 May 1995 * |
| 周建斌 等 著: "《核信号数字分析与处理》", 28 February 2017 * |
| 蒋宗炳: "数字反应性仪", 《中国核科技报告》 * |
| 陈济东 主编: "《大亚湾核电站系统及运行 上册》", 31 July 1994 * |
| 黄礼渊 等: "反应堆物理试验用便携式数字反应性仪的研制", 《核电子学与探测技术》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111554419A (en) * | 2020-05-18 | 2020-08-18 | 中国核动力研究设计院 | Nuclear reactor subcritical degree measuring method based on uncertainty analysis |
| CN111554419B (en) * | 2020-05-18 | 2022-11-15 | 中国核动力研究设计院 | Nuclear reactor subcritical degree measuring method based on uncertainty analysis |
| CN112466492A (en) * | 2020-11-26 | 2021-03-09 | 中国核动力研究设计院 | Measuring device for intermediate range of out-of-pile nuclear instrument system and application method thereof |
| CN112466492B (en) * | 2020-11-26 | 2022-02-11 | 中国核动力研究设计院 | Measuring device for intermediate range of out-of-pile nuclear instrument system and application method thereof |
| CN112687411A (en) * | 2020-12-24 | 2021-04-20 | 中国核动力研究设计院 | Reactivity measurement method based on multi-detector relay signals |
| CN113871040A (en) * | 2021-09-29 | 2021-12-31 | 福州奇正谷科技有限公司 | Reactivity instrument and system with background current correction |
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Application publication date: 20190702 |